Fiberboard cutting tool



' Nv.3,1936. l i AW, DAVIS 2,059,317

- FIBERBOARD CUTTING TooL Filed sept. 28,' 1954 2 sheets-s119611 WT G. Dm/1s,

Gum/waag Nov. 3, 1936. w. G. DAvls FIBERBOARD CUTTING TOOL Filed sept. 28, 1954 2 sheds-sheet 2 jnvcwto'o. W. G. DAws,

Patented Nov. 3, 1936 PATENT OFFICE FIBERBOARD CUTTING TOOL Willis G. Davis, Pompton Plains, N. J., assignor to The Stanley Works, New Britain, Conn., a corporation of Connecticut Application September 28, 1934, Serial No. 745,999

6 Claims.

This invention consistsvin a tool for cutting, grooving and beveling all kinds of wall board, which is easy to use, cuts clean and saves much time over that required in the use of ordinary carpenters tools. It is preferably made of aluminum, is light yet strong and easy to handle. With it, a ten foot length of fiber board can be sheared in ten seconds, without taking the board oil the pile, leaving a true and smooth edge. By the selectivey use of different cutters, the tool is readily adapted for vertical or bevel cuts.

The construction and yoperation will be fully understood from the following description and the accompanying drawings, in which,

Fig. 1 is a perspective view of the tool as equipped for the operation of forming a V groove and a vertical cut at the bottom of the groove, at a predetermined distance from and parallel to the edge of the board,

Fig. 2 is a perspective View of the attachment for cutting shallow wide grooves, called the molding attachment,

Fig. 3 is a plan view of the attachment with which circles can be cut,

Fig. 4 is a bottom plan View of the tool with the bottom guide bar attached, as used for edge beveling, and

Fig. 5 is a perspective of a cutter holder mountable in the body of the tool.

The main plane-like body I of the tool is an aluminum casting, provided with handles 2 and openings 3, adapted to interchangeably receive cutter holders 4 and 5, which are held in place by the turn button 6, pivotally mounted in the body, between said openings, by a dog 1 and thumb screw 8. The outer ends of the openings are undercut and one end of each cutter holder is beveled to t under the same. 'Ihe holders have raised projections on their sides to support them on the body. The holder 4 carries a vertical cutting blade IU and the holder 5 carries two inclined blades I2 for cutting a V groove. These blades are clamped to raised portions or flanges I3 and I4 on the holders 4 and 5, respectively, by plates I5 and screws I6. Holder 5 has two of such plates for each blade to enable the width of the groove cut to be varied by either clamping the blade between the plates or between the inner one of the latter and the holder surface 5. Obviously one of these cutter holders can be used by itself without the other, and they are interchangeable to permit the tool to be used either right-handedly or left-handedly.

The body I has also perforated lugs I8 for the reception of the guide rods 20, which can be held in said lugs by the thumb screws 2I. It alsohas four tapped holes 22 for the reception of headed screws 23, by which the bottom guide-bar 25 can be attached.

Three attachments are mountable on the guide 5 rods; rst, the L-shaped guide bar 28, adapted to engage the edge of the board so that the cut will be parallel thereto. This bar carries an inclined cutter 30, by which the edge can be beveled, independently of any other operation. This com- 10' bination makes it possible to cut and bevel strips simultaneously on both edges, the cutters on the 'tool being used for cutting or beveling, or both, the inside new edge, while the inclined blade on the gage bar can be used for beveling the outside edge.

Secondly, the molding attachment 32 can be mounted on the guide rods, between the guidebar 28 and the body I. It carries widely separated blades 35, set at an angle less than 45 de- 20 grecs, so as to cut a shallow wide groove. A number of such grooves being cut parallel to each other, the intervening ribs between the same may be rounded oli with a sand paper block, so as to form strips suitable for moldings and battens. In this case, the guide bar 28 is reversed so as to present its straight back face to the edge of the board, and the holders 4 and 5 are removed.

Finally, the attachment 40 for cutting circles can be mounted on the guide bars. This consists of the bar 4I, having rearwardly projecting arms 42, each having a set screw 43 in its outer end, between which a strip of wood 44 is clamped.

A nail 45, driven through this strip, acts as the center of the circle and cutter holder 5, with one blade removed, is mounted in the body I, opposite the arms 42, which are near oneend of the bar 4I. Holder 4 can be used as well as 5, for cutting vertical edges, if the radius of the circle is twenty inches or more.

It will thus be seen that the tool of the present invention is usable for a .variety of operations, such as are encountered by carpenters in the cutting of wall board, etc., and that great economy of time and labor results from its use, com- 45 pared to that required by the use of ordinary carpenters tools.

What I claim is:

1. A cutting tool, comprising a main body having a pair of openings, cutter blocks interchangeably fitting in the same, one of said blocks carrying a vertical blade and the other a pair of inclined blades, a pair of guide rods mountable in said body at right angles thereto, a gage bar mountable on said rods, and a molding attachment for cutting shallow wide grooves mounted on said rods between said guide bar and the main body.

2. A cutting tool comprising a plane-like body having a pair of openings, flanged cutter carriers interchangeably fitting in the same, one of said carriers adapted to mount thereon a cutting blade at any desired vertical angle, the other carrier adapted to mount thereon a pair of blades disposed at an angle to each other and each at any desired cutting angle.

3. A cutting tool comprising a plane-like body having a pair of openings, flanged cutter carriers interchangeably tting in the same, one of said carriers adapted to mount thereon a cutting blade at any desired vertical angle, the other carrier adapted to mount thereon a pair of blades disposed at an angle to each other and each at any desired cutting angle, and means provided on said last mentioned carrier whereby the depth or width of the beveled groove may be varied as desired.

4. A Wall board tool, comprising a plane-like body provided with openings, cutter holders interchangeably mountable in said openings, blades in said holders for slicing and grooving, guide rods extending laterally from said body, a bar carried on said rods and provided with Widely separated cutters for cutting shallow grooves, and a gage-bar mounted on said rods beyond said first mentioned bar.

5. In combination with a cutting tool for performing operationsl on flat Work and having a body portion, cutters secured Within the body portion and engageable with the Work, a guide bar engageable with a side face of the work, adjustable means securing said bar in spaced relation to the body portion of the tool to locate the position of said body portion on the Work, and a cutter angularly supported by the guide bar in bevelling relation to the side Work face whereby said face may be bevelled to a plane surface independently of the operation of the cutters within said body portion.

6. In combination with a cutting tool for operations on at Work and having a body portion, a plurality of angularly disposed cutters adjustably mounted Within the body portion and engageable with the work, a guide bar engageable with a side face of the work, adjustable means securing said bar in parallel spaced relation to the body portion of the tool to locate said cutters relative to the side of the Work, and a cutter angularly and adjustably supported Within the guide bar in bevelling relation to the side work face whereby said face may be bevelled to a plane surface simultaneously with the cutting action of said rst named cutters on the body portion of the Work.

WILLIS G. DAVIS. 

